When these results are applied to the cubic in the temperature form
for the dissipation coefficient (\(c=3,\,p=0\) ) and as already
anticipated from the discussion given for case (b) in
Sec. REF , for values of \(c_s < 1\) , we get that \(n_s \simeq 0.95\)  and even smaller values for \(n_s\)  the larger is \(Q_*\)  and the
smaller is \(c_{s*}\) , showing that the spectrum is already outside the
two-sigma range in the red tilted side of the observational values for
\(n_s\) . This indicates that for this form of a cubic dissipation
coefficient, the model is not expected to benefit from a DBIWI
realization, as already discussed before. Let us then next focus on
the linear dissipation coefficient WI model of
Ref. [1]}. Some explicit examples of results
obtained in this case are given in the Table REF  for the
quartic inflaton potential and with a linear in \(T\)  dissipation
coefficient. As it is clear, for \(Q_*>10\) , the tensor-to-scalar
ratio is smaller than \(10^{-7}\) , hence, the model is able to resolve
the aforementioned inconsistency in the cold DBI
inflation [2]} and discussed in the Introduction
section.
<TABLE>